Bottle stopper



FIG. 1 is a perspective view of the bottle stopper with portions of a hand and bottle shown in broken lines for illustrative purposes only and forming no part of the claimed design.

FIG. 2 is a front elevational view of the bottle stopper, the rear elevational view being a mirror image of the front view.

FIG. 3 is a left side elevational view thereof, the right side view being a mirror image of the left side view.

FIG. 4 is a top plan view of the bottle stopper; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a bottle stopper, as shown and described. 